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I installed and 45 gallon transfer tank and did a lot of research so as not to take up much space as I too have a 6.4 bed. My tank is only 9 inches deep and won't interfere with a fifth wheel hitch. I'll be using the Anderson Ultimate hitch when the time comes. Check out Amazon for a wide variety.

It should be possible. You can also go to Titan tanks and they can put in a 52gal tank in replacement of your stock tank

I have the Titan 52 gallon tank and have had it for years. It was an easy install using the same OEM sending unit and the computer in the truck works fine. The only data that is wrong is the distance to empty since the truck computer still thinks it has a 26 gallon tank, but even I can multiple by 2 in my head to get the correct distance to empty. A dealer can reprogram the computer to correct this, but I have never done it. No need.

I have the Titan 52 gallon tank and have had it for years. It was an easy install using the same OEM sending unit and the computer in the truck works fine. The only data that is wrong is the distance to empty since the truck computer still thinks it has a 26 gallon tank, but even I can multiple by 2 in my head to get the correct distance to empty. A dealer can reprogram the computer to correct this, but I have never done it. No need.

This tank isn't cheap, but worth every cent in my book.

does the tank hang way below the frame? I also do a considerable about of off road travel in my truck so i would be concerned if it lowers my clearance.

It probably hangs down 4" lower than stock. Sit above the bottom line of the rear axle. I offloaded for years in the Rockies and it would not be a problem were it is positioned. The new tank is longer, wider and a bit deeper than stock

It probably hangs down 4" lower than stock. Sit above the bottom line of the rear axle. I offloaded for years in the Rockies and it would not be a problem were it is positioned. The new tank is longer, wider and a bit deeper than stock

I dont think its that much. I paid pretty close attention before and after. may be an inch or two.

You can get a skid for it - which I did install, but it sits above the straps, which I dont like (basically the tank sits in the skid and it all gets strapped up).

Big difference is there is a considerable amount of fuel tank ABOVE the fuel sender, and the tank runs almost to the transfer case.